Charles wood



(ModeL) O. WOOD.

LOGK. No. 443,887. Patented Dec. 30, 1890.

UNITED STATES PATENT OFFICE.

CHARLES \VOOD, ()F TORONTO, CANADA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 443,887, dated December 30, 1890.

Application filed June 25,1890. Serial No. 356,693. (Modld I To all whom, it may concern.-

Be' it known that I, CHARLES \VOOD, mechanic, of the city of Toronto, in the county of York,in theProvince of Ontario,Canad-a, have invented a certain new and useful Improvement in Locks, of which the following is a specification.

The object of the invention is to design a lock which, practically speaking, cannot be picked; and it consists of a simple arrangement of mechanism which may be easily set so that no one can open the lock unless he is acquainted with the position in which the mechanism has been set, substantially as hereinafter more particularly explained.

Figure 1 is a perspective outside View of my improved lock. Fig. 2 is an inside view exposing the locking mechanism. Fig. 3 is an enlarged perspective inside view of the hasp. Fig. 4. is an inside view of the hasp, showing the pointer looked over the key-hole. Fig. 5 is a sectional side detail of the gearing for setting the locking mechanism. Fig. 6 is a perspective detail of the key and its barrel. Fig. 7 is a detail in rear elevation of plate holding setting mechanism out of gear.

My improved lock is specially adapted-for trunks, but it will be seen that it may be used or readily adapted for any other purpose.

In the drawings, A represents the outer plate of the lock, and B the hasp.

C is the catch, which is fixed to and projects from the inside of the hasp B. This catch is designed to fit into the hole a, made in the plate A.

D and E are two levers pivoted on the plate A, as indicated. A projection bis made on the upper end of each lever, and on the lower end of the lever D a projection dis made. Each lever D and E has a spring F inserted in it, as shown. The upper ends of these springs are held between bent ends of the movable plate G, the said springs being set so as to hold the ends of the levers D and E together, as indicated in Fig. 2. The plate G is made movable, so that if one lever be moved on the one side the other lever will fol low it.

11 is a disk, fixed to the spindle I, to which the spur-wheel J is connected.

f is a notch made in the disk H. The disk H is pivoted between the lower ends of the leposition indicated in Fig. 5, is designed to hold the pinion K opposite to and in mesh with the spur-wheel J; but it also allows the longitudinal movement of the spindle L, which is looselyjournaled on the plates of the lock to be pushed clear of the spur-wheel J so that the spindle, with its pinion, maybe revolved when acting on the spur-wheel J.

When the pointer M is set in the position indicated in Figs. 1 and 4, it is set so as to cover the key-hole O. In order to lock the pointer in its position,I place in the haspB a movable block P, acted upon by the spring Q, and when the pointer M is pushed around to cover the key-hole 0 its end comes in contact wit-h the block P, which it pushes back until the opening R comes opposite to the end of the said pointer, when the spring Q pushes the block P back, forcing the opening Rover the end of the pointer, so as to lock it in posit-ion.

Having described the parts involved in my invention, 1 shall proceed to explain briefly the operation.

Before the back plate S is put on, the disk 11 is turned so as to bring the notch f opposite to the projection d, and in order to hold the disk in position the key T is inserted into the key-hole O, and is turned so as to throw the levers D and E apart, which action forces the projection d into the notch f. It will be observed on reference to Fig. 1 that the outer plate A is marked in the Figs. 1 to 9 radiating around the keyhole 0. Then it is desired to set the lock, the spindle L is pressed down so as to push the pinion K clear of the spur-wheel J. The spindle is then revolved in the direction shown by the arrow in Fig. 1 until its pointer M is opposite to the figureit is intended to adopt. For instance, assume that Fig. at is chosen, the spindle L is turned so as to bring the pointer M opposite to 4.. The spindle is then released, so that its spring N is permitted to push the pinion .K into mesh with the spur-wheel J. The pointer is then moved back until it covers the key-hole O, in which position it is held by the block 1, as already described.

\Vhen it is desired to open the lock, the small end 9 of the key '1 is inserted in the small key-hole U and turned so as to engage with the lip h, formed in the block P, which action raises the said block P clear of the end of the pointer M, when the said pointer may be turned round in the direction indicated by the arrow until it comes opposite to the figure 4, when the large end of the key T may be inserted into the key-hole O and turned so asto push the levers D and E apart and the projection d'farther into the notchf. As the notch -f' will only be opposite to the projection (Z when the pointer is at the figure chosen, the lock cannot-be open ed except when the pointer isin the position stated. Consequently no one can open the lock unlesshe knows the figure chosen. In order to hold the pinion K clear of the spur-wheel J, I place a plate V between thepinion K and front plate A. This plate is provided with a slot \V, shaped as shown. The lower part of the slot is large enough for the collar 1 on the spindle L to enter, and the upper part is the same as the spindle L. (onsequently when the pinion K is thrown out of gear by pressure on the pointer M the plate V may be slipped down by pressure of the key T on the projection 2 and will effectually hold the pinion K out of gear, as the collar 1 cannot enter the small part of the slot V. (See Fig. 7.) When it is desired to allow the pinion K to again mesh with the spunwheel J, the plate V may be forced up by pressure on the stud 3, when the collar 1 drops into the large part of the slot V and the pinion K comes into gear again with spur-wheel J. (See Figs. 5 and 7.)

\Vhat I claim as my invention is- 1. A lever D, working on a stationary pivot in the case, having a projection cl on one end, in combination with the disk H, havinga notch f made in it and connected to the spindle of the spur-wheel J, and the pinion K, connected to the movable spindle L, substantially as and for the purpose specified.

2. The pivoted levers D and E, having a projection cl on one of them,the springs F, and movable plate'Gr, in combination with the disk I-I, having anotchf made init and connected to the spindle of the spur-wheel J, the pinion K, connected to the movable spindle L, the pointer M, and the springN, substantially as and for the purpose specified.

'3. The block P, connected to the hasp-B and actuated by the spring Q, in combination with the pointer M, substantially as and for the purpose specified.

Toronto, May 23, 1890.

, CHARLES WOOD.

In presence of CHARLES C. BALDWIN, E. GuMmNes. 

